Screw jacks, as functional components, are widely used in various industries, such as: actuators for CNC equipment, locomotive maintenance lifting platforms, roll adjustment devices in the metallurgical industry, ladle lifting and tilting devices in steel plants, and motion transmission devices in places inaccessible to humans; vehicle lifting frames in the railway vehicle industry; large flexible clamping and indexing fixtures; welding robots; mobile equipment and combined formwork in the construction industry; automatic or remote-controlled opening devices for large doors and windows; gate opening devices in water conservancy and other industries; adjusting the ground height of swimming pools; radar and solar remote sensing devices; adjusting the height of operating tables in medical devices; lifting stages; lifting devices in the automotive manufacturing industry; and transmission devices in aerospace, national defense, and military applications, etc. Reasons why a screw jack may fail to lift or have weak lifting force include: 1. The overflow valve pressure adjustment is not up to standard; adjust the pressure to the required value. 2. Internal leakage in the hydraulic cylinder; check or replace the hydraulic cylinder components. 3. Reversing…

The worm gear has an internal thread structure, acting as the nut for the screw jack and matching it. The lifting speed equals the worm's input speed divided by the reduction ratio of the worm gear and worm, then multiplied by the screw pitch. Due to its structure, this type of screw jack generally uses grease lubrication, with some series using oil lubrication, offering advantages such as longer lifespan and more stable operation. The worm gear screw jack utilizes the worm gear and worm to achieve speed reduction. Worm gear screw jacks are generally used in low-speed, high-torque transmission equipment. They reduce the speed of a motor, internal combustion engine, or other high-speed power source by meshing a smaller gear on the input shaft with a larger gear on the output shaft. Ordinary screw jacks may also have several pairs of gears operating on the same principle to achieve the desired speed reduction. The ratio of the number of teeth on the large and small gears is the transmission ratio. A screw jack consists of various gear pairs…

What are the inspection methods for screw jacks? During prolonged use of screw jacks, some malfunctions are inevitable. Don't panic! Troubleshooting and improvement should be carried out in the presence of professional technicians to ensure normal work efficiency. Today, we will introduce some countermeasures for screw jacks that encounter problems such as inability to lift or weak lifting force during application, as follows: Method 1: The overflow valve pressure adjustment is not meeting requirements; adjust the pressure to the required value. Method 2: The oil supply pump is faulty. Method 3: The oil level is too low, or the inlet oil filter is blocked. Method 4: Internal leakage in the screw jack cylinder; see the troubleshooting methods in items 2, 3, 4, and 5 above. Method 5: The directional valve is stuck or leaking internally. Method 6: The check valve is leaking; check the check valve core and valve…

Lubrication of cycloidal reducers (1) Lubricating oil must be injected into this cycloidal pinwheel reducer before use. Reducers sold are generally not lubricated for ease of loading, unloading and transportation. (2) For convenience of customers, our Tingxing reducers using grease lubrication are all lubricated with grease before sale. (3) For general-purpose cycloidal pinwheel reducers, 40# to 50# ordinary mechanical oil is generally sufficient at room temperature. In order to improve product performance and extend the service life of the reducer, high viscosity (concentration) gear oil should not be used for reducers of B4 and above (including B4). Gear oil is prone to generating stirring heat inside the reducer, accelerating the high temperature of the reducer, which is detrimental to the reducer. (4) When the reducer is working under harsh working conditions, frequent start-stop and high temperature or low temperature, the lubricating oil should be reconsidered. (5) When the reducer is lubricated with grease, it is recommended to use special lubricating oil...

Cycloidal gear reducers are commonly used in many applications. Compared with other reducers, the advantages of cycloidal pinwheel reducers are mainly reflected in the following aspects: Small size and light weight: Cycloidal pinwheel reducers are small in size, compact in structure, and lightweight, making them popular with users. High transmission ratio: Cycloidal pinwheel reducers have a higher speed ratio; the transmission ratio is high for the first reduction stage and high for two-stage reduction. High transmission efficiency: Due to the use of rolling meshing gear teeth, there is no relative sliding on the meshing surfaces, and the overall efficiency can reach over 90%. Easy assembly and disassembly, easy repair: Due to the reasonable structural design, cycloidal reducers are easy to assemble and disassemble, easy to maintain, have few parts, and are easy to lubricate. Long service life and low noise: Based on the principle of planetary gears, the number of teeth biting, the large overlap coefficient, and the overall balance of the body is achieved by grinding the bearing steel after quenching…

The cycloidal pinwheel reducer's transmission mechanism can be divided into three parts: input, reduction, and output. A double eccentric sleeve with a 180° offset is mounted on the input shaft. Two roller bearings, called swing arms, are mounted on the eccentric sleeve, forming an H-mechanism. The central holes of the two cycloidal wheels serve as the raceways for the swing arm bearings on the eccentric sleeve. The cycloidal wheels mesh with a set of annularly arranged pin teeth on the pin gear, forming an internal meshing reduction mechanism with a one-tooth tooth difference. (To reduce friction, in reducers with small speed ratios, the pin teeth are fitted with pin tooth sleeves). When the input shaft rotates one revolution with the eccentric sleeve, due to the characteristics of the cycloidal wheel's tooth profile and its restriction by the pin teeth on the pin gear, the cycloidal wheel's motion becomes a planar motion involving both revolution and rotation. During a forward revolution of the input shaft, the eccentric sleeve also rotates one revolution, and the cycloidal wheel rotates one tooth in the opposite direction, thus achieving reduction. Then, with the aid of the W-output mechanism, the low-speed rotational motion of the cycloidal wheel is transmitted through a pin shaft…

I. Installation 1. Cylindrical gear reducers generally need to be installed on a horizontal surface with an inclination not exceeding 10°. If a greater than 10° inclination is required due to special needs, please contact our company before use to discuss the relevant matters. 2. When connecting the input and output shafts to the power source and supporting machinery, if a coupling is used, the shafts must be strictly aligned and there should be no misalignment. V-belts and chains should not be too tight or too loose. 3. The installation foundation should be firm and reliable, free from vibration and looseness. Fixing screws should be selected strictly according to relevant standards and regulations. 4. The installation screws should be checked periodically to ensure they are tightened securely. Spring washers should be used whenever possible. II. Lubrication 1. Gear reducers generally use oil bath lubrication. Before use, ensure that medium-pressure gear oil N220 or N320 is added to the specified level (20-30mm above the lowest tooth), and replenish it periodically. 2. For initial use, 50 hours…

When selecting a screw jack, it's crucial to match the screw shaft speed with the load it will bear. Furthermore, the allowable load, allowable external load, and allowable screw shaft rotation speed of the screw jack must be verified. Exceeding these specifications will severely damage the entire lifting equipment. Whether under static, dynamic, or impact loads, the screw jack's allowable load capacity must be maintained. A jack with sufficient capacity should be selected based on a safety factor, operating stroke, and screw stability calibration. During operation, the surface temperature of the jack's reduction gear should be controlled within the range of -15°C to 80°C, ensuring the surface temperature of the moving nut also falls within this range. When purchasing an SWL screw jack, the load capacity must be considered. The selected jack must not exceed its allowable load capacity under static, dynamic, or impact loads. A jack with sufficient capacity should be selected based on a safety factor, operating stroke, and screw stability calibration…

Screw jacks hold a significant position in the lifting platform industry and are among the most popular lifting platform products on the market. Our professionals will now explain more about screw jacks to you, hoping this information will be helpful. 1. Self-locking performance: Due to its internal structure using worm gears and trapezoidal screws for active transmission, the screw jack possesses self-locking properties, ensuring the equipment's reliability and safety. 2. Mechanical synchronization: A single motor can drive 2, 4, 6, 8, 12, or 20 screw jacks to achieve rigid synchronization with a synchronization accuracy of 0.1mm. 3. Position control: Synchronous servo motors or encoders can control the position with an accuracy of 0.1mm. 4. Simple maintenance, low noise, and environmentally friendly operation: Screw jacks are easy to maintain and operate with low noise.

In our daily work, as beginners, we often encounter problems like this: when adding oil to a worm gear reducer, we don't know how much to add, or if we add too much, it will leak. More importantly, we don't know when to add oil. Actually, the oiling process is the same for all reducer models. Let's discuss this in detail below. Judging the oil level while the worm gear reducer is running will result in a significant difference from the actual oil level. It is recommended to measure the oil level and add the appropriate amount of worm gear reducer lubricating oil when the reducer is stopped. Worm gear reducer manufacturers usually provide instructions on specifying the oil level, filling the oil to 2/3 of the oil window. This data is for the stopped state. Note: Do not add lubricating oil while the worm gear reducer is running. This is because during the operation of the worm gear reducer, the rotation of its internal components, gears, or worm wheel drives the internal lubricating oil to move...